Marine fuel base comprising a component of renewable origin and method for manufacturing same
AssigneeTotalEnergies One Tech
InventorsBarbara HEYBERGER, Alix BOURDASSOL, Anthony LE ROUX
Life of this patent
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Abstract
A marine fuel base comprising an alkyl ester component of renewable origin, derived from fatty acids of plant or animal origin, which improves the viscosity and stability of a petroleum residuum, especially a visbroken residuum.
Claims14
Use of fatty acid alkyl esters to improve the viscosity of a component of at least one hydrocarbon residue and obtain a marine fuel base, wherein (i) 10 to 70% m/m of a first component consisting of fatty acid alkyl esters of renewable origin is mixed with (ii) 90% to 30% m/m of a second component consisting of at least one hydrocarbon residue coming from a crude oil chosen from an atmospheric residue, a vacuum residue and a visbreaking residue, and the mixture obtained forms a marine fuel base that has a kinematic viscosity at 50° C. 15 to 75% lower than a kinematic viscosity calculated according to the formula:
- ϑ
- =
- exp
-
- (
- exp
-
- (
- V
-
- B
- mélange
- -
- 23.097
- 33.469
- )
- )
- -
- 0.8
- ,
- (
- 4
- )
- where VBmélange is the weighted average of the viscosity indices of the first component and of the second component, these viscosity indices being calculated via the formula:
- V
-
- B
- i
- =
- 2
-
- 3
- .
- 0
-
- 9
-
- 7
- +
- 3
-
- 3
- .
- 4
-
- 69
- ×
- ln
-
- (
- ln
-
- (
- v
- i
- +
- 0
- .
- 8
- )
- )
- ,
- (
- 5
- )
- where vi is the kinematic viscosity of the component i expressed in stokes.
Marine fuel base comprising:
- (i) 10 to 70% m/m of a first component consisting of fatty acid alkyl esters of renewable origin,
- (ii) 90 to 30% m/m of a second component consisting of at least one hydrocarbon residue coming from a crude oil chosen from an atmospheric residue, a vacuum residue and a visbreaking residue,
- said base having a kinematic viscosity at 50° C. 15 to 75% lower than a kinematic viscosity calculated according to the formula:
- ϑ
- =
- exp
-
- (
- exp
-
- (
- V
-
- B
- mélange
- -
- 23.097
- 33.469
- )
- )
- -
- 0.8
- (
- 4
- )
- where VBmélange is the weighted average of the viscosity indices of the first component and of the second component, these viscosity indices being calculated via the formula:
- V
-
- B
- i
- =
- 2
-
- 3
- .
- 0
-
- 9
-
- 7
- +
- 3
-
- 3
- .
- 4
-
- 69
- ×
- ln
-
- (
- ln
-
- (
- v
- i
- +
- 0
- .
- 8
- )
- )
- ,
- (
- 5
- )
- where vi is the kinematic viscosity of the component i expressed in stokes.
Method for improving the viscosity of a component of at least one hydrocarbon residue for the preparation of a marine fuel base comprising the mixture of (i) 10 to 70% m/m of a first component consisting of fatty acid alkyl esters of renewable origin with (ii) 90% to 30% m/m of a second component consisting of at least one hydrocarbon residue coming from a crude oil chosen from an atmospheric residue, a vacuum residue and a visbreaking residue, and for obtaining a mixture forming a marine fuel base that has a kinematic viscosity at 50° C. 15 to 75% lower than a kinematic viscosity calculated according to the formula:
- ϑ
- =
- exp
-
- (
- exp
-
- (
- V
-
- B
- mélange
- -
- 23.097
- 33.469
- )
- )
- -
- 0.8
- ,
- (
- 4
- )
- where VBmélange is the weighted average of the viscosity indices of the first component and of the second component, these viscosity indices being calculated via the formula:
- V
-
- B
- i
- =
- 2
-
- 3
- .
- 0
-
- 9
-
- 7
- +
- 3
-
- 3
- .
- 4
-
- 69
- ×
- ln
- (
- ln
-
- (
- v
- i
- +
- 0
- .
- 8
- )
- )
- ,
- (
- 5
- )
- where vi is the kinematic viscosity of the component i expressed in stokes.
Dependencies are inferred from the claim text.